SDSU BIO570 Exam 1 Questions and Answers | Latest Version | 2024/2025 | Graded A+
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Course
SDSU BIO570
Institution
SDSU BIO570
SDSU BIO570 Exam 1 Questions and
Answers | Latest Version | 2024/2025 |
Graded A+
Why are stem cells unique compared to other types of cells?
They have the ability to differentiate into various specialized cell types.
What role does the hypothalamus play in regulating bodily functions?
...
SDSU BIO570 Exam 1 Questions and
Answers | Latest Version | 2024/2025 |
Graded A+
Why are stem cells unique compared to other types of cells?
✔✔They have the ability to differentiate into various specialized cell types.
What role does the hypothalamus play in regulating bodily functions?
✔✔It helps maintain homeostasis by controlling temperature, hunger, and thirst.
What structural feature distinguishes rough ER from smooth ER?
✔✔Rough ER has ribosomes attached to its surface, while smooth ER does not.
How do antigens trigger an immune response?
✔✔They are recognized as foreign substances, prompting antibody production.
What is the primary purpose of meiosis in organisms?
✔✔To produce genetically diverse gametes for reproduction
1
,How does the sodium-potassium pump contribute to nerve impulse transmission?
✔✔It maintains a gradient of ions across the cell membrane, essential for action potentials.
In what ways can genetic mutations be beneficial?
✔✔They can lead to adaptations that improve survival in certain environments.
What process is responsible for copying DNA into RNA in protein synthesis?
✔✔Transcription
What is a key difference between cellular respiration and fermentation?
✔✔Fermentation occurs without oxygen, while cellular respiration requires oxygen.
How does the structure of a neuron support its function in the nervous system?
✔✔Its long axon transmits signals over distances, while dendrites receive inputs.
What is the significance of the blood-brain barrier?
✔✔It protects the brain by preventing certain substances from entering from the bloodstream.
2
, How does the body use feedback mechanisms to maintain blood glucose levels?
✔✔Insulin and glucagon adjust glucose levels in response to rises or falls in blood sugar.
What is a synapse, and why is it important in neural communication?
✔✔A synapse is the gap between neurons where neurotransmitters carry signals across.
How does ATP release energy within cells?
✔✔By breaking the bond between its phosphate groups, releasing energy for cellular work.
What is the role of tRNA in protein synthesis?
✔✔It brings amino acids to ribosomes to assemble them into proteins based on mRNA
instructions.
What causes the genetic variation seen in offspring from sexual reproduction?
✔✔The combination of chromosomes from two parents and crossing over during meiosis.
How do viruses differ from bacteria in terms of structure and reproduction?
✔✔Viruses lack cellular structure and require a host cell to replicate.
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